Valve-spring lifter for internal-combustion engines



APPLICATION FILED AUG.5| I920.

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. TTORNEY C. F. TROTTNOW.

VALVE SPRING LIFTER FOR INTERNAL COMBUSTION ENGlNES.

APPLICATION FILED AUG-5| 1920.

1 ,4 1 3,8 1 2, Patented Apr.- 25, 1922.

2 SHEETS-SHEET 2.

M INVENTOR. (5W

Byqrzmvw/w ATTORNEY.

' wardly VALVESPRING LIFTER non INTERNAL-COMBUSTION ENGINES. 1

"Specification of Letters Patent.

Patented Apr. 2 5, 1922.]

Application filed August 5, 1920. Serial No. 401,298.

To all whom it may concern:

Be it known that I, CARL F. TROTTNOW, a citizen of the United States, residing at Rock Island, in the countyof Rock Island and State of Illinois, have invented certain new and usefullmproveinents in Valve-Spring Lifters for Internal-Combustion Engines, of which the following is a specification.

My invention has reference to devices forcompressing the valve springs of internal combustion engines, and has for its purpose to provide a simple and efficient tool of that kind, which will not be ,in the way of the operator, and which can be readily adjusted to different lengths,

valve stems.

In the drawings:

Fig. 1 is a view of the invention inside elevation, with some of the parts shown ,in-

drical member, provided at its upper end with a bar 7, ending in an angular pin 8, adapted for engagement with the upper face of a valve. Slidable within the cylinder 6 is a stem 9, provided at intervals with pairs of projections 10, adapted for support upon a collar 11 fixed in the lower end ofthe part 6, and provided with aslotted opening 12 for the passage of the lugs 10.

At its lower end the stem 9 is formed into a forked hanger 13, in the lower end of which is pivoted an arm 14, provided at its end with a bifurcated plate 15, for engagement with the lower face of the washer 4. The other end of the arm 14 is bent upwardly as at 16, which is capable of being forced out by an eccentric 17, fixed on a pivot 18, held in slotted openings 19 in the hanger 13. The pivot 18 is extended at one end into a handle 20, by means of which the eccentric 17 can be rocked to force the arm 16 outwardly or permit the return movement thereof. Accidental release of the eccentric is prevented by means of-a coiled spring 21,

secured at one end to the arm 16 and at the other end to the hanger 13, which spring for use with engines of varying sizes, or with differing lengths of holds the arm 16 at all times in operating contact with the eccentric. Y i

To use the tool, the stem 9 is inserted in the cylinder 6 to a desired height, the lugs. 10 passing through the slotted; ends of the openingv 1 2. The pin 8 is then positioned on the valve 1, and thestem 9. given a quarterturn, bringing one pair of the lugs 10 intoengagement with the collar 11, and holding the stem against release from the cylinder.

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The-same movement brings'the arm 14. intoalignment with the bar 7 permitting the fork 15 to be positioned'beneath the washer 4.. The handle 16 is then forced upwardly, moving the arm 16 outwardly, and compressing the spring 3, as shown in Fig. 1. The pin 5 can then be released of the valve removed for repairs.

The stem 9 is provided at with a pin 22, at right angles with the lugs and the parts its upper end 10, which pin actsas, a guide, to hol d the stem in parallelp'osition with relation to the walls of the cylinder 6.; The bar 7 mayalso have a pivotal connection with the part :6, as shown at a, permittinga limitedoutward' movement of the lower end of thexcylinder,

in engaging the fork 15, or disengaging thesame ,This enables thefork to clear the stem 2 so as to be swung to either side thereof in releasing the fork, or to be moved into position for engagement with the washer 4.

When in position ona valve the tool'has a pivotal support which enables it to be turned to one side or the other, so as to bein the way as little as possible.

It'will beobvious that the length of the. tool can be changed, at will, by extension of the stem 9, or contraction thereof within the cylinder 6. 7

What vI claim as my invention, and desire to secure by Letters Patent, is:

1. A device of the class described, comprising a cylindrical member, provided with a valve-engaging arm; a member telscopically movable in said cylindrical member and provided with means for holding the same in adjusted positions therein; a lever fulcrumed in the end'of'said movable member, provided at one ofits ends with means 'for engagement with the valve devices of an engine; and means for actuatlng sald lever to cause a, compression of the tension portion of said devices.

one of its ends with a valve-engaging arm; a member telescopically movable in the opposite end of said cylindrical member, and provided with means for arresting the movement thereof at predetermined points; a lever fulcrumed in the outer end of said telescopic member, provided with means for engagement with the tension device of a valve; and an eccentric device carried by" said telescopic member, capable of actuating said lever to cause a compression vof said tension devices.

3. A deviceof the class described, co1n prising a cylindrical member provided with a valve engaging arm at one of its ends and a suitably apertured' collar at its opposite end; a stem provided with pairs of projections, capable of holding said stem in adjusted positions'in' said cylinder; a hanger on the end of said stem a lever fulcrumed in said hanger, and adapted to be brought into spacedapart alignment with said arm by rotation of said stem; and means for imparting a limited movement to the operative end of said lever in the direction of said arm,

a pair of said projectionsinto engagement with said collar, to hold said stem in place.

'lrA device of the class described, comprising a cylindrical member, provided with a slotted opening in one of its ends; avalveengaging arm having a pivotal connection with the opposite end of said cylinder; a stem slidable in said cylinder and provided with pairs'of projection'scapable of passing through said opening when said stem is in a desired position, but engaging the end of the movement of saidstem to bring" said parts into alignment operatingto bring said cylinder upon a partial rotation of the stem, to hold the same from release; a lever supported by the outer end of said stem, one end of which lever is adapted for engagement with the tension device of a valve;

a slotted plate at one of its ends; a valve en-- gaging arm; connected with the opposite end thereof a stem rotatably held'in said cylin der and provided with'a pair of lugs adapted to pass through said plate and engage the inner face thereof upon a partial rotation of said stem; a lever fulcrumed in the outer end of said stem, one end of which is adapted for engagement with the valve-spring of an engine; and means for actuating said lever, I

6. A prising one of a member telescopically movable in said cyldevice of the class described, coma cylindrical member, provided at inder, and provided with means for arresting the movement thereof at predetermined points; a lever fulcrumed in the'outer end of said telescopic member, provided with means-for engagement with the valve-spring of an engine; an eccentric device'carried by said telescopic member, capable of actuating said lever to cause a compression or said spring; and means for holding said lever and eccentric in operative engagement.

In testimony whereof I afiiX my signature.

CARL F. 'rRoTrNoW;

to cause a compression of said spring,

its ends with avalve engaging arm; 

